A random sample of 88 eighth grade students' scores on a national mathematics assessment test has a mean score of 287. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on this exam is more than 285. Assume that the population standard deviation is 39. At a=0.13, is there enough evidence to support the administrator's claim? Complete parts (a) through (e) (D) ring the standardized test statistic z. Z= (Round to two decimal places as needed.) (c) Find the P-value. P-value=(Round to three decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. O Fail to reject Ho O Reject Ho (e) Interpret your decision in the context of the original claim 4

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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A random sample of 88 eighth grade students' scores on a national mathematics assessment test has a mean score
of 287. This test result prompts a state school administrator to declare that the mean score for the state's eighth
graders on this exam is more than 285. Assume that the population standard deviation is 39. At a=0.13, is there
enough evidence to support the administrator's claim? Complete parts (a) through (e)
(D) ring the standardized test statistic z
Came
Z=
=(Round to two decimal places as needed.)
(c) Find the P-value
P-value=
(Round to three decimal places as needed.)
(d) Decide whether to reject or fail to reject the null hypothesis.
O Fail to reject Ho
Reject Ho
(e) Interpret your decision in the context of the original claim.
lp
Transcribed Image Text:K A random sample of 88 eighth grade students' scores on a national mathematics assessment test has a mean score of 287. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on this exam is more than 285. Assume that the population standard deviation is 39. At a=0.13, is there enough evidence to support the administrator's claim? Complete parts (a) through (e) (D) ring the standardized test statistic z Came Z= =(Round to two decimal places as needed.) (c) Find the P-value P-value= (Round to three decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. O Fail to reject Ho Reject Ho (e) Interpret your decision in the context of the original claim. lp
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